Throttle Actuator Control (TAC) Module

2008 Pontiac Grand Prix BaseSECTION Throttle Actuator Control (TAC) Module
WARNING: This page is about a different car, the 2007 Buick LaCrosse and 2007 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: TAC Module Connector End View
GM1243581Courtesy of GENERAL MOTORS CORP.
TAC Module Connector Part Information

Connector Part Information 
  • OEM: 15355368
  • Service: 15355368
  • Description: 20-Way F GT 150 Series Sealed (GY)
Terminal Part Information 
  • Pins: 1- 4, 6- 8, 11- 13, 16- 18
  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: Pins 1 4, 6- 8, 11-13, 16, 17 - E/4
  • Core/Insulation Crimp: Pins 18 - E/1
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
TAC Module Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 TN 1274 5-Volt Reference
2 PU 1272 Low Reference
3 L-BU 1162 APP Sensor 2 Signal
4 D-GN 389 Vehicle Speed Signal
5 - - Not Used
6 WH 17 Stop Lamp Switch Signal
7 OG/BK 1061 UART Serial Data Secondary
8 TN/WH 551 Ground
9-10 - - Not Used
11 D-BU 1161 APP Sensor 1 Signal
12 BN 1271 Low Reference
13 WH/BK 1164 5-Volt Reference
14-15 - - Not Used
16 TN 800 UART Serial Data Primary
17 TN/WH 551 Ground
18 PK 39 Ignition 1 Voltage
19-20 - - Not Used
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.